| 摘要 |
PURPOSE:To reduce the manufacturing cost of a solar cell, by applying anodic oxidation to an aluminum plate to form an anodic oxidation film, and applying a hole-sealing treatment with a water solution containing metal salt to the anodic oxidation film. CONSTITUTION:At least one surface of an aluminum plate is subjected to anodic oxidation to form an anodic oxidation film, which is subjected to a hole-sealing treatment applying a water solution containing metal salt. To the anodic oxidation film, sulfuric acid one, oxalic acid one, chromic acid one, etc., are applicable. The thickness of the film is desirable to be 1-10mum. Thereby a light- weight device is obtained whose heat dissipation efficiency is improved, and the manufacturing cost of a solar cell can be reduced. |
